dockware-core/common.helpers/DisplayRotationHelper

DisplayRotationHelper

class DisplayRotationHelper : DisplayManager.DisplayListener

Helper to track the display rotations. In particular, the 180 degree rotations are not notified by the onSurfaceChanged() callback, and thus they require listening to the android display events.

Constructors

constructor(context: Context)

Constructs the DisplayRotationHelper but does not register the listener yet.

Functions

getCameraSensorRelativeViewportAspectRatio

open fun getCameraSensorRelativeViewportAspectRatio(cameraId: String): Float

Returns the aspect ratio of the GL surface viewport while accounting for the display rotation relative to the device camera sensor orientation.

getCameraSensorToDisplayRotation

open fun getCameraSensorToDisplayRotation(cameraId: String): Int

Returns the rotation of the back-facing camera with respect to the display.

onDisplayAdded

open fun onDisplayAdded(displayId: Int)

onDisplayChanged

open fun onDisplayChanged(displayId: Int)

onDisplayRemoved

open fun onDisplayRemoved(displayId: Int)

onPause

open fun onPause()

onResume

open fun onResume()

onSurfaceChanged

open fun onSurfaceChanged(width: Int, height: Int)

Records a change in surface dimensions.

updateSessionIfNeeded

open fun updateSessionIfNeeded(session: Session)

Updates the session display geometry if a change was posted either by onSurfaceChanged call or by onDisplayChanged system callback.